Stump-extractor.



` A: P.- BERNIN 35.13.V J. WARE..

STUMP BXTRAG'TOR. APPLICATION FILEDJAN. 26, 1909.

ATTORNEYS 'UNITED STATES PATENT OFFICE.

ALEXIS P. BERNIN .AND ELBER'I J. WARE, OF PORTLAND, OREGON.

STUlVlP-EXTRACTOR.

Specification of Letters Patent.

Patented Dec. 28, 1909.

Application filed January 26, 1909. Serial N o. 474,213.

To all whom it may concern:

Be it known that we, ALEXIS P. BERNIN and ELBERT J. WARE, both citizensof the United States, and residents of Portland, in the county ofMultnomah and State of Oregon, have invented a new and ImprovedStump-Extractor, of which the following is a full, clear, and exactdescription.

This invention relates to machines for extracting stumps or similarobstructions from the ground.

The object of the invention -is to provide a machine which is simple inconstruction, having means whereby the device may be anchored, andimproved means for attachment to the stump or other obstruction which isto be removed.

The invention consists in the construction and combination of parts, tobe more fully described hereinafter and particularlyT set forth in theclaim.

Reference is to be had to the accompanying drawings forming a part ofthis speciication, in which similar characters of reference indicatecorresponding parts in both views, and in which- Figure l is aperspective view showing the machine in positionl upon the ground,anchored to a tree and also attached to the stump to be extracted; andFig. 2 is a longitudinal vertical section through the machine.

The supporting frame may be formed of side rails 1 and 2 and end rails 3and 4, secured to the rails 1 and 2 in any suitable manner. Cross rails6 and 8 are secured to the upper edges of the side rails 1 and 2 andform supports for bearings 9 and 10 respectively, 1n which a screw 12 isjournaled. Said screw l2 is threaded throughout substantially its entirelength, and is formed with reduced ends 14 and 15 respectively, whichfit the bearings 9 and 10. Plates 16 and 17 are secured to the ends ofthe screw 12 by means of nuts 18, and a yoke 20 may be secured to eachplate. Said yokes may be formed of bars of iron bent into a U-shape andriveted over against one face of the corresponding plate. The yokeattachedv to the plate 17 may receive a cable or anchorage member 24,which in the present instance is shown as passing around a tree 25, inorder that the frame may be held in proper position.

A nut 28 is arranged to travel longitudinally over the screw 12, and isformed with wings 29, which are apertured to receivea cable or otherattaching member 30, which in the present instance is shown as passingaround a stump 32 which is to be extracted from the ground. The wings 29slide over guides 34 extending longitudinally of the frame adjacent thescrew 12, and supported at each end upon cross rails 36 and alsosupported upon the upper edges of the side rails l and 2.

A bevel gear 40 is secured to the screw 12, so as to rotate therewith.Extending upwardly from the main frame is an auxiliary frame having siderails 42 and 43 connected by cross rails 44 and 45. Mounted upon thecross rails 44 and 45 are bearings 46 and 47 respectively, in which ashaft 50 is journaled. A bevel pinion 51 is mounted upon the shaft 50,so as to rotatejtherewith and mesh with the bevel gear 40. 'A drum 54 isalso mounted on the shaft 50 to rotate therewith and may be surroundedby a cable leading to any source of power, whereby the drum 54 may berotated, in order to rotate the screw l2.

l/Vhen the screw 12 is rotated in one direction, the nut 28 travels overthe guides 34 and tightens the cable or attaching member 30, so as toextract the stump 32 from the ground. hen the screw 12 is rotated in theopposite direction, the cable 30 is slackened.

Having thus described our invention, we claim as new and desire tosecure by Letters Patent A stump extractor comprising a frame consistingof side bars and connecting cross bars, a bearing on each of said crossbars, a screw having reduced ends journaled in the bearings, andprovided near one end thereof with a bevel gear, a vertical shaftjournaled on the frame and having a bevel pinion meshing with the gear,a drum on the upper end of the shaft, plates journaled on the ends ofthe screw outside of the bearing, a yoke connected with each of saidplates, nuts for retaining the plates in place, a nut threaded on to thescrew intermediate the bearings, and provided upon each side thereofwith Wings each of said Wings having a names to this specicaton in thepresence of longltudlnal openlng, a cable having lts ends twosubscrlblng Wltnesses.

passed through the opening and adapted to ALEXIS P. BERNIN.

engage the stump, and a guide upon each ELBERT J. VARE. 5 side of thescrew for supporting the Wing 7Witnesses:

and upon Which the adjacent Wing slides. E. H. QUACKENBUSH,

In testimony whereof We have signed our A. C. GAGE.

